I could say that I know a lot of people that have some addictions. Some are addicts to smoke cigars, marihuana or some stuffs. Another are addicts to the alcohol in general.
In my case, I could not say that I have an addiction, because I'm not a frequent consumer of this stuffs, I only use it in special occasions, maybe when I am partying.
About smoking, I don't smoke very often, in fact almost never, but I drink alcohol almost every weekend. Although I do not consider myself an addict to alcohol, according to the class of the introductory course to my career It could be said that I am a problematic alcoholic because they are defined as people who when they drink, they don't stop. But I have never blackout.
Some common withdrawal symptoms about drug abuse are mood changes, anxiety, depression and irritability.
I have a lot of friends that have an addiction to smoke, another ones that are problematic alcoholics. In my family I have a cousin that have an addiction to drugs.
I hope not to become addicted to drugs, but I'm sure that I won't.